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Is my TV in need of service? Need some suggestions

NCC-2000
03-25-2005, 04:01 PM
Greetings. I've just come across this forum and thought somebody here could offer me som guidance.

This past December I bought a new TV because my old one was about to kill itself. I bought a Toshiba 30HF84 from my local Future Shop store. I live in Kitchener Ontario Canada if anyone is curious.

For many weeks this TV performed perfectly, everything looks great on it. However, over the past little while I've been noticing some unusual behaviour from it and I am considering calling Future Shop for service since it is being covered by their product service plan. Here are the symptoms. After being off for any given amount of time (say overnight and being turned on in the morning), the set emits a high-pitch "squealing" from within. Pressing slightly on the plastic case on the back by the jacks, the pitch changes. This squealing will disappear after the set has been on for about 10 to 15 minutes. The other thing that the set does that puzzles me happens at seemingly random times. It might go a day or two without doing it or it may do it several times in a matter of seconds. I hear a "tick" from within the set and at the same time, the image on the screen seems to flicker. More precisely, the image appears to 'zoom in' as it fades to black, then returns to normal, all in about 1/4 of a second. Does this appear to be a defective unit to you guys? Any suggestions would be appreciated.

stevej27
03-25-2005, 04:19 PM
It seems that your set is diffective.....call in for servive

stevej27
03-25-2005, 04:21 PM
It seems that your set is diffective.....call in for service
sorry i mean service

alalk3
03-25-2005, 04:29 PM
Sounds like power supply issues. Return or repair

rbinck
03-25-2005, 08:55 PM
That sounds like a flyback transformer going out. The snap sound is the picture tube discharging due to an arcover. The squeel is due to the flyback transformer having a hard time probably due to a partial short curcuit in the transforme itself, the high voltage lead or the picture tube. I would definately get a service call on that unit before there is even more damage.

Blue Goose
03-25-2005, 10:37 PM
I have an old(1995) Sony Trinitron 32" in my bedroom that makes a high pitched whine now and then...is this the same deal? My brother in law gave it to us and if you tap on the sides a bit it stops for a second but will eventually come back. Sorry to hijack the thread, just wondering if this is what it is.

rbinck
03-25-2005, 11:17 PM
Yep, it probably is the flyback. I had a 27" Sony that whined for years without any problem. Same deal as you, but when they start sparking, it's time for the service guy.

NCC-2000
03-26-2005, 11:13 AM
Thanks for the replies. I will try to arrange a service visit to have this thing checked out. If necessary I'll show the guy this thread to see if it heps him diagnose the problem any faster.